US5973601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of radio transmission between a radio transmitter and radio receiver
Assignee: Individual
•
Filing: 1997-12-02
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Granted: 1999-10-26
•
Expires: 2017-12-02
Abstract
Abstract An antenna assembly providing selectable omnidirectional or directional reception of radio transmissions in a frequency band in accordance with the invention includes an electrically conductive reflector (432) defining a cavity (702) having a bottom (708), an opening (714) and a surface (704 and 706) extending from the bottom to the opening and an electrical output (763); an electrically conductive loop (431) coupled to ground and having an electrical outlet (766) for coupling to an RF amplifier (407), the loop being positioned between the bottom opening of the cavity; a RF switch (406) having an input (760) and first and second outputs (762 and 764), the RF switch having a first switching state electrically connecting the input to the first output and a second switching state electrically connecting the input to the second output, the first switch output being electrically coupled to ground and the second switch output being electrically coupled to the output of the electrically conductive loop; and wherein the first switching state provides the directional reception and the second switching state provides the omnidirectional reception of the radio transmissions.
Inventors
- 👤 Thomas J. Campana, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0057; G; G08; G08B; G08B21/00; G08B21/02; G08B21/0202; G08B21/0222; G08B21/0227; G08B21/023; G08B21/0241; G08B21/0247; G08B21/0263; G08B25/00; G08B25/007; H04B; H04B17/00; H04B17/10; H04B17/15; H04B17/18; H04B17/20; H04B17/23; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0837; H04B7/0842; H04B7/086
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
77 words
A method of monitoring a radio transmitter relative to a radio receiver to which the radio transmitter transmits a radio transmission comprising: periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver.
Claim 2
Independent Claim
77 words
A method of monitoring a radio transmitter relative to a radio receiver to which the radio transmitter transmits a radio transmission comprising: periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver.
Claim 3
Dependent Claim
44 words
A method in accordance with claim 1 wherein the at least one group of data bits comprises: a plurality of groups of data bits with each group of data bits including a plurality of identification digits of the identification code and the synchronization information.
Claim 4
Dependent Claim
38 words
A method in accordance with claim 2 wherein: the at least one group of data bits comprises a plurality of frames with each frame comprising a plurality of identification digits of the identification code and the synchronization information.
Claim 5
Dependent Claim
38 words
A method in accordance with claim 3 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the plurality of groups of data bits, including a plurality of digits of the identification code.
Claim 6
Dependent Claim
18 words
A method in accordance with claim 4 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 7
Dependent Claim
18 words
A method in accordance with claim 3 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 8
Dependent Claim
38 words
A method in accordance with claim 2 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the plurality of groups of data bits, including a plurality of digits of the identification code.
Claim 9
Dependent Claim
17 words
A method in accordance with claim 7 wherein: each group of data bits includes error correction code.
Claim 10
Dependent Claim
18 words
A method in accordance with claim 8 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 11
Dependent Claim
18 words
A method in accordance with claim 7 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 12
Dependent Claim
17 words
A method in accordance with claim 2 wherein: each group of data bits includes error correction code.
Claim 13
Dependent Claim
18 words
A method in accordance with claim 11 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 14
Dependent Claim
18 words
A method in accordance with claim 2 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 15
Dependent Claim
35 words
A method in accordance with claim 1 wherein: the at least one group of data bits comprises a plurality of frames comprising a plurality of identification digits of the identification code and the synchronization information.
Claim 16
Dependent Claim
56 words
A method in accordance with claim 14 wherein: the at least one group of data bits comprises a plurality of frames comprising a repeat of a plurality of the identification digits and the synchronization information; and further comprising at least one additional frame including a repeat of at least one identification digit of the identification code.
Claim 17
Dependent Claim
48 words
A method in accordance with claim 15 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the at least one group of data bits, comprising an additional frame containing a repeat of at least one additional identification digit of the identification code.
Claim 18
Dependent Claim
18 words
A method in accordance with claim 16 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 19
Dependent Claim
18 words
A method in accordance with claim 15 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 20
Dependent Claim
44 words
A method in accordance with claim 14 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the at least one group of data bits, encoding a repeat of at least one additional identification digit of the identification code.
Claim 21
Dependent Claim
18 words
A method in accordance with claim 19 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 22
Dependent Claim
14 words
A method in accordance with claim 14 wherein: each frame includes error correction code.
Claim 23
Dependent Claim
18 words
A method in accordance with claim 21 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 24
Dependent Claim
18 words
A method in accordance with claim 14 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 25
Dependent Claim
30 words
A method in accordance with claim 1 wherein: the at least one group of data bits includes bits which encode an indicator of status of a user of the transmitter.
Claim 26
Dependent Claim
44 words
A method in accordance with claim 24 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the at least one group of data bits, encoding a repeat of at least one additional identification digit of the identification code.
Claim 27
Dependent Claim
18 words
A method in accordance with claim 19 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 28
Dependent Claim
17 words
A method in accordance with claim 24 wherein: each group of data bits includes error correction code.
Claim 29
Dependent Claim
18 words
A method in accordance with claim 27 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 30
Dependent Claim
18 words
A method in accordance with claim 24 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 31
Dependent Claim
23 words
A method in accordance with claim 24 wherein the at least one group of data bits further includes: bits which encode additional information.
Claim 32
Dependent Claim
44 words
A method in accordance with claim 1 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the at least one group of data bits, encoding a repeat of at least one additional identification digit of the identification code.
Claim 33
Dependent Claim
17 words
A method in accordance with claim 31 wherein: each group of data bits includes error correction code.
Claim 34
Dependent Claim
18 words
A method in accordance with claim 32 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 35
Dependent Claim
18 words
A method in accordance with claim 31 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 36
Dependent Claim
17 words
A method in accordance with claim 1 wherein: each group of data bits includes error correction code.
Claim 37
Dependent Claim
18 words
A method in accordance with claim 35 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 38
Dependent Claim
18 words
A method in accordance with claim 1 wherein: each periodic radio transmission is on a different carrier frequency.
Claim 39
Independent Claim
68 words
A method of transmission between a radio transmitter and a radio receiver comprising: periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver.
Claim 40
Independent Claim
68 words
A method of transmission between a radio transmitter and a radio receiver comprising: periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver.
Claim 41
Dependent Claim
44 words
A method in accordance with claim 38 wherein the at least one group of data bits includes: a plurality of groups of data bits with each group of data bits including a plurality of identification digits of the identification code and the synchronization information.
Claim 42
Dependent Claim
38 words
A method in accordance with claim 38 wherein: the at least one group of data bits comprises a plurality of frames with each frame comprising a plurality of identification digits of the identification code and the synchronization information.
Claim 43
Dependent Claim
44 words
A method in accordance with claim 38 wherein the periodically transmitted radio transmissions further comprise: another group of data bits, transmitted after the at least one group of data bits, encoding a repeat of at least one additional identification digit of the identification code.
Claim 44
Dependent Claim
18 words
A method in accordance with claim 38 wherein: each periodic radio transmission is on a different carrier frequency.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-10-25 | 2003-04-26 | 2003-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-25 | 2007-04-26 | 2007-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-25 | 2011-04-26 | 2011-10-26 | $7700.00 | Window Closed / Lapsed |